Nginx Windows High Traffic issues

[itpp2012]

It all depends what you are writing, too small blocksize, many seeks,
onboard diskcache not working (writeback). Run some disk benchmarks to see
what your storage is capable of and compare that to how much data your
attempting to write. At the moment your disks are not keeping up with the
amount of write requests.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,251186,251246#msg-251246